Processing:Started with a modified Hubble Pallet then standard processing with BlurX, NoiseX and StarX on the NB. Worked a lot with GHS on the H-alpha, which became the false L.
Various Collections for Comparison:I must like this object since this is the fourth rendition.
The first below was taken with my Takahashi 180Ed with a CCD.... gives and idea of how the Clamshell actually is supposed to look. The others are with my Stellarvue and are smaller fields.
Sh2 119 Two Night's Images 
Sh2 119 
Sh2 119 HOO Basic Information From GalaxyMap:Sh 2-119 is located near the North American nebula (
Sh 2-117, NGC 7000). Avedisova lists 6 ionising stars. The hottest of these is the O 7.5 III runaway star 68 Cygni (
HD 203064), which was likely blasted out of the Cepheus OB2 association about 5.2 million years ago.
It is also known as HS 240 = [GS55] 240.
Likely ionised by 68 Cygni.[[url=
http://galaxymap.org/cat/view/sharpless/119#note_1]1]
68 Cyg originated in the Cep OB2 association 5.2 million years ago. [[url=
http://galaxymap.org/cat/view/sharpless/119#note_2]2]
Notes: 1.
^ Wisotzki, L. & Wendker, H. J. (1989). "Is HS 240 an interstellar bubble?", Astronomy and Astrophysics, Vol. 221, 311-320. [[url=
http://adsabs.harvard.edu/abs/1989A%26A...221..311W]1989A&A...221..311W]
2.
^ Blaauw, A. (1961). "On the origin of the O- and B-type stars with high velocities (the "run-away" stars), and some related problems", Bulletin of the Astronomical Institutes of the Netherlands, Vol. 15, 265. [[url=
http://adsabs.harvard.edu/abs/1961BAN....15..265B]1961BAN....15..265B]
Distance Estimates:700 pc [[url=
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1982ApJS...49..183B]1982ApJS...49..183B]
700 pc +/- 250 [[url=
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1984ApJ...279..125F]1984ApJ...279..125F]
870 pc +/- 190 [[url=
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1984NInfo..56...59A]1984NInfo..56...59A]
GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>There are 313 Sh2 objects. All now imaged by yours truly. These are basically the Hydrogen Alpha and other ionized nebulae around the edge of the Milky Way.
This is my collection:
Sharpless2Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171Please note there is also a Sharpless2 Group with now more than 3000 examples.
Sharpless2 GroupOther useful links include:
Gary Imm's CollectionGalaxyMap's CollectionThe Sharpless CatalogThe MDW H-alpha Sky SurveyThe Avedisova star formation regions and the Sharpless nebulae TABLEHope you enjoy these obscure but interesting objects...
Comments